数字频率计的设于实现
本文论述了基于单片机的数字频率计的实现，介绍了开发频率计所需要的各种软件。详细阐明了频率计的设计步骤以及方法，通过以89C52单片机为核心，利用单片机的算术运算和控制功能并采用LED数码管将所测频率显示出来。本频率计设计简洁，适用范围广。
关键词:单片机;数字频率计;计数器;
目录
绪 论 ······························································1
一、频率计概述 ····················································4
1.1 频率计原理·····················································5
1.2 频率计设计方····················································5
二、频率计的总体方案及硬件设 ·······································6
2.1 单片机部分······················································6
2.2 控制电路 ·······················································6
2.3 锁存部分························································8
2.4 显示部分························································9
三、频率计的软件设计················································10
3.1 相关开发工具简介···············································10
3.1.1 KEIL 软件简介···············································10
3.1.2 STC-ISP 简介·················································10
3.1.3 PROTEL 99se 简介············································11
3.2 软件程序设计···················································11
3.2.1程序流程图···················································12
3.2.2 程序的功能实现过程··········································12
3.2.2（1） 程序···················································12
3.3 频率计仿真运行调试·············································14
4结束语···························································17
参考文献··························································18
